{
 "ocl_version": "0.1.0",
 "name": "Chemin Horsu",
 "slug": "chemin-horsu-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.38125181907566,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 361.0,
   "end_distance_m": 363.0,
   "start_elevation_m": 234.51527352362223,
   "end_elevation_m": 235.30289856000374,
   "min_gradient_pct": -20.97371693421053
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.207350970802246,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 360.0,
   "end_distance_m": 363.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 235.30289856000374,
   "min_gradient_pct": -12.691443972479988
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 37.27879570239281,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 360.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 235.9606178159993,
   "min_gradient_pct": -6.7082577245645325
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 32.82750024545635,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 237.3794280554253,
   "min_gradient_pct": -6.238347267484983
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.269712055912777,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 359.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 233.8969707910996,
   "end_elevation_m": 239.55091320228215,
   "min_gradient_pct": -5.150340311867154
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.653074366134547,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 360.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 240.7599466224133,
   "min_gradient_pct": -4.444267110370561
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.931848100379057,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 360.0,
   "end_distance_m": 410.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 245.5626020810692,
   "min_gradient_pct": -2.668698335346619
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.96835493713482,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 358.0,
   "end_distance_m": 458.0,
   "start_elevation_m": 233.69408328464462,
   "end_elevation_m": 252.66243822177944,
   "min_gradient_pct": -1.4204844220686539
  }
 ],
 "shape": {
  "ascent_concentration": 0.515,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 164.0,
  "shape_class": "stepped"
 },
 "length_m": 635.8233152781343,
 "start_elevation_m": 220.43653135571736,
 "end_elevation_m": 269.64944368652334,
 "endpoint_gain_m": 49.21291233080598,
 "overall_gradient_pct": 7.740029525227193,
 "accumulated_ascent_m": 53.12754044102394,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 37.27879570239281,
   "start_distance_m": 360.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 362.5,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 235.9606178159993,
   "start_xy": [
    436345.5178894313,
    6264013.470256996
   ],
   "end_xy": [
    436349.3683317123,
    6264016.594996119
   ]
  },
  "max_10m": {
   "gradient_pct": 32.82750024545635,
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 237.3794280554253,
   "start_xy": [
    436345.5178894313,
    6264013.470256996
   ],
   "end_xy": [
    436353.71996648517,
    6264019.057367903
   ]
  },
  "max_20m": {
   "gradient_pct": 28.269712055912777,
   "start_distance_m": 359.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 369.0,
   "start_elevation_m": 233.8969707910996,
   "end_elevation_m": 239.55091320228215,
   "start_xy": [
    436344.80738398625,
    6264012.766565294
   ],
   "end_xy": [
    436361.5529090763,
    6264023.489637115
   ]
  },
  "max_25m": {
   "gradient_pct": 26.653074366134547,
   "start_distance_m": 360.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 372.5,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 240.7599466224133,
   "start_xy": [
    436345.5178894313,
    6264013.470256996
   ],
   "end_xy": [
    436366.77487080364,
    6264026.444483256
   ]
  },
  "max_50m": {
   "gradient_pct": 22.931848100379057,
   "start_distance_m": 360.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 385.0,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 245.5626020810692,
   "start_xy": [
    436345.5178894313,
    6264013.470256996
   ],
   "end_xy": [
    436389.4196618036,
    6264036.691175637
   ]
  },
  "max_100m": {
   "gradient_pct": 18.96835493713482,
   "start_distance_m": 358.0,
   "end_distance_m": 458.0,
   "midpoint_distance_m": 408.0,
   "start_elevation_m": 233.69408328464462,
   "end_elevation_m": 252.66243822177944,
   "start_xy": [
    436344.0968785412,
    6264012.062873591
   ],
   "end_xy": [
    436435.3305416551,
    6264050.697999376
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.7082577245645325,
   "start_distance_m": 33.0,
   "end_distance_m": 38.0,
   "midpoint_distance_m": 35.5,
   "start_elevation_m": 220.3596782844937,
   "end_elevation_m": 220.02426539826547,
   "start_xy": [
    436134.9927617619,
    6263764.8638819065
   ],
   "end_xy": [
    436138.39430998545,
    6263768.528505991
   ]
  },
  "min_10m": {
   "gradient_pct": -6.238347267484983,
   "start_distance_m": 29.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 220.586250843447,
   "end_elevation_m": 219.9624161166985,
   "start_xy": [
    436132.271523183,
    6263761.932182638
   ],
   "end_xy": [
    436139.0746196302,
    6263769.261430808
   ]
  },
  "min_20m": {
   "gradient_pct": -5.150340311867154,
   "start_distance_m": 29.0,
   "end_distance_m": 49.0,
   "midpoint_distance_m": 39.0,
   "start_elevation_m": 220.586250843447,
   "end_elevation_m": 219.55618278107357,
   "start_xy": [
    436132.271523183,
    6263761.932182638
   ],
   "end_xy": [
    436145.8777160774,
    6263776.590678978
   ]
  },
  "min_25m": {
   "gradient_pct": -4.444267110370561,
   "start_distance_m": 27.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 39.5,
   "start_elevation_m": 220.61945041505086,
   "end_elevation_m": 219.50838363745822,
   "start_xy": [
    436130.9109038936,
    6263760.466333005
   ],
   "end_xy": [
    436147.91864501155,
    6263778.789453428
   ]
  },
  "min_50m": {
   "gradient_pct": -2.668698335346619,
   "start_distance_m": 27.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 52.0,
   "start_elevation_m": 220.61945041505086,
   "end_elevation_m": 219.28510124737755,
   "start_xy": [
    436130.9109038936,
    6263760.466333005
   ],
   "end_xy": [
    436164.92638612946,
    6263797.112573852
   ]
  },
  "min_100m": {
   "gradient_pct": -1.4204844220686539,
   "start_distance_m": 27.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 220.61945041505086,
   "end_elevation_m": 219.1989659929822,
   "start_xy": [
    436130.9109038936,
    6263760.466333005
   ],
   "end_xy": [
    436198.799479205,
    6263833.88468701
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.38125181907566,
   "start_distance_m": 361.0,
   "end_distance_m": 363.0,
   "midpoint_distance_m": 362.0,
   "start_elevation_m": 234.51527352362223,
   "end_elevation_m": 235.30289856000374,
   "start_xy": [
    436346.22839487635,
    6264014.173948699
   ],
   "end_xy": [
    436347.64940576645,
    6264015.581332104
   ]
  },
  "max_3m": {
   "gradient_pct": 40.207350970802246,
   "start_distance_m": 360.0,
   "end_distance_m": 363.0,
   "midpoint_distance_m": 361.5,
   "start_elevation_m": 234.09667803087967,
   "end_elevation_m": 235.30289856000374,
   "start_xy": [
    436345.5178894313,
    6264013.470256996
   ],
   "end_xy": [
    436347.64940576645,
    6264015.581332104
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.571,
   "obstruction_max_height_m": 26.19,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-pyr1",
   "road_pbf": "block-batch-fr-pyr1.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:c54ac68b3f57b41b"
  },
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E436-N6263_0m5@21LHD1GQ-2026-03-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E436-N6264_0m5@21LHD1GQ-2025-04-11.tif"
  ],
  "calculated_at": "2026-09-20T06:11:36+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E436-N6263",
   "E436-N6264"
  ],
  "elevation_blocks": [
   "21LHD1GQ@2025-04-11",
   "21LHD1GQ@2026-03-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0436_6264_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0436_6265_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1GQ"
  ],
  "ign_editions": [
   "2025-04-11",
   "2026-03-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0436_6264_MNT_O_0M50_LAMB93_IGN69": "2026-03-20",
   "LHD_FXX_0436_6265_MNT_O_0M50_LAMB93_IGN69": "2025-04-11"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 5.25,
   "width_p10_m": 2.5,
   "width_min_m": 1.5,
   "width_max_m": 11.5,
   "bounded_share": 0.194,
   "unbounded_share": 0.806,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    360.0,
    385.0
   ],
   "width_at_max25_m": 4.75,
   "window_stations": 6,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 31,
    "stations_resolved": 31,
    "width_median_m": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.839,
    "unbounded_share": 0.161,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.38,
    "window_m": [
     360.0,
     385.0
    ],
    "width_at_max25_m": 1.5,
    "window_stations": 6,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Escoub\u00e8s",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}